Programmed 2009-2012 Colorado ECM Engine Computer 12628911

Restore Your Truck’s Reliability with a VIN-Programmed Engine Control Module

There’s nothing more frustrating than a vehicle you can’t depend on. If your 2009-2012 Chevrolet Colorado is suffering from perplexing issues like stalling, erratic shifting, a persistent check engine light, or a complete no-start condition, the Engine Control Module (ECM) is a highly probable culprit. As the brain of your vehicle’s engine management system, a failing ECM can cause a cascade of problems that are often difficult to diagnose. This module, part number 12628911, is the definitive solution to get your truck running like new again.

For over two decades in the shop, I’ve seen firsthand how a faulty ECM can mimic a dozen other component failures. Drivers spend hundreds on sensors and parts, only to find the core issue remains. This is where our service stands apart. We take the guesswork and high dealership costs out of the equation. When you order, you provide us with your truck’s VIN. We then flash this ECM with the latest, most stable software updates directly from GM, ensuring it is perfectly matched to your vehicle’s specific configuration. It arrives at your door ready for installation, eliminating the need for expensive scan tools or a trip to the dealer for programming.

Is Your Truck Exhibiting These Symptoms?

A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution for your 2009-2012 Colorado ECM issues:

• ✔ Check Engine Light is illuminated with codes like P0601, P0606, or U0100.
• ✔ Engine cranks but refuses to start.
• ✔ Unexplained stalling or rough idling, especially when warm.
• ✔ Noticeable decrease in fuel economy.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ Apparent loss of power and poor throttle response.
• ✔ Failure to pass an emissions inspection.

Your Straightforward Installation Guide

Replacing the ECM is a job most DIYers can handle with basic tools. Our pre-programming makes the process much simpler. Follow these general steps to get back on the road.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
2. Locate the ECM: On the 2009-2012 Colorado and Canyon, the ECM is typically located on the right-hand (passenger side) firewall in the engine bay.
3. Disconnect Connectors: Carefully release the locking tabs and unplug the wiring harness connectors from the old module. Inspect the connectors for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket. It’s usually held in place by a few small bolts.
5. Install the New Module: Mount your new, pre-programmed ECM onto the bracket and securely fasten the bolts.
6. Reconnect Everything: Plug the wiring harnesses back into the new ECM, ensuring they click securely into place. Reconnect the negative battery terminal.
7. Perform Security Relearn: You will need to perform a simple key-cycle security relearn procedure. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds. Repeat this two more times. On the fourth cycle, the vehicle should start and run.

Verified Vehicle Compatibility

This ECM is a direct replacement for a wide range of GM vehicles and is interchangeable with multiple service numbers, including 12636659, 12639300, 12628993, and more. While this is a perfect fit for the 2009-2012 Colorado ECM requirement, it also fits the following models. Please verify your specific engine and options.